HET 500kVA Exciter Transformer Technical Specifications & Safety Features

1. Core Technical Parameters

2. Current Ratings

• Input Current: 50A

• HV Output Current: 36.6A (13.7kV tap) / 4A (60kV tap)

3. Advanced Protection Systems

3.1 Electrostatic Shielding

Specialized shielding between HV windings features:

• Dedicated electrostatic shield layer

• Voltage distribution optimization

• Partial discharge reduction

3.2 Surge Protection

• Zinc oxide arresters on all ground connections

• Piezoresistors installed per HV output

• Breakdown protection for both operator and equipment

4. Insulation System Design

4.1 Multi-Layer Protection

• Cylinder-type winding configuration

• Inter-turn insulation layers

• Compound insulation tube skeleton

4.2 Voltage Distribution Control

Engineering solutions include:

• Balanced top/bottom winding area design

• Electrostatic shield compensation

• Iron core electromagnetic shielding

5. Operational Considerations

• Test Conditions: Requires water termination for 60kV testing

• Maintenance: Regular oil analysis recommended for ONAN systems

• Safety Compliance: Meets IEC 60076 power transformer standards

This exciter transformer is specifically engineered for high-voltage testing applications where precise voltage regulation and robust safety protection are critical requirements.